ok, called to a nurs

ok, called to a nursing home for 40 something y/o female co red spot on top of foot. Get there to find pt taking belongings out to her car, finally get her back inside, remove slippers from both feet, and see corresponding red marks on top of both. Tried to explain that it was probably from the slippers rubbing…she was adamant that she had a hx of endocarditis in her feet and this is how it started last time….really?????